Android 主题（Theme）实现

主要代码如下

1）设置Theme(res/values/styles)

<resources xmlns:android="http://schemas.android.com/apk/res/android">    <!--        Base application theme, dependent on API level. This theme is replaced        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.    -->    <style name="AppBaseTheme" parent="android:Theme.Light">        <!--            Theme customizations available in newer API levels can go in            res/values-vXX/styles.xml, while customizations related to            backward-compatibility can go here.        -->    </style>    <!-- Application theme. -->    <style name="AppTheme" parent="AppBaseTheme">        <!-- All customizations that are NOT specific to a particular API-level can go here. -->    </style>    <!-- blue -->    <style name="blueTheme">        <item name="android:background">@color/blue</item>        <item name="android:textColor">@color/white</item>    </style>    <!-- black -->    <style name="blackTheme">        <item name="android:background">@color/black</item>        <item name="android:textColor">@color/white</item>    </style></resources>

2）调用样式

package com.example.androidtestapp;import android.os.Bundle;import android.app.Activity;import android.view.Menu;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);/*bluesetTheme(R.style.blueTheme);*//*black*/setTheme(R.style.blackTheme);setContentView(R.layout.activity_main);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}